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TO ALL WHOM IT MAY CONCERN Be it known thatI, LUCIUS J. KNOWLES, of Warren, in the county of Worcester', and State of Massachusetts, have invented an improvement in Looms; and I do hereby declare that the following, taken `in connection with the drawings which accompany and form part of this specifica-tion, is a description of myinvention suiieient to enable those skilled in the art to'practisc it.

This invention. relates to the arrangement of the heddle-lever cams for operating the hed( le-levers, which work the harness-frames of a loom, to make the changes in the shed needed to produce desired figured appearances on the surfaces of woven goods. v

The object of this invent-ion is to so compact the arrangement of' the heddle-lcvers and the harness-frames as to be able to increase the number thereof located in a given space, and thus increase the capacity of the loom for producing complex configuration of the goods woven therein; as inthe Patent No. 59,613, dated November 13, 1866, Imake use of heddle-levers with a pin in each, through which pins cams operate to move said levers. But in my said patent Imake use of path-cams, the depths ei the grooves therein being equal to the length of the pins projecting from the hcddlelevers,ainl as the material forming,` the sides of `the grooves must he united, it

follows that in the arrangement of the heddle-levers, room must be given for the thickness of material used to unite the sides of the cam-grooves. In the arrangement which forms thc subject of my present invention, thisroomvis saved, and may be utilized for placing addition al. heddle-levers andthe harness-frames connected therewith. In my present invention I make use of two sets of plate or diskfcanis, arranged on two shafts, the edges of said plates or disks being cam-shaped, and each heddle-lever having its pin'or roller acted on by and between each of two opposite disks or cams, making,r a cooperative pair, so that the hcddle-levers may be located in a space, vone dimension of which is determined by the sum of the thickness of the levers, plus the sum of the projections of the heddle-lever pins. An embodiment of my invention is illustrated in the drawings- Figure 1 showing, in side elevaticin, enough of a loom to represent the harness-frames a, the heddlelevers and the heddlc-levcr cams, and the means for 'operating the saine, and

Figure 2 showing in plan, .taken below the line e z, iig. I, that part of the loom-frame containing the heddlei lever cams,and parts therewith immediately connected. The shafts on which the plate or disk-cams c and d are secured aremarked respectivelye and f, and the pins in the hed'dle-levers are marked g,the'shafts c andf being connected by gears 7i z., so as to rotate said shafts isoehronously.

Figure 3 shows a diagram of a path-cam arrangement for drivingr the heddle-levers, and it will be seen readily, on inspection, that the spaces, shown in said figure, marked xx therein, and which are necessary to the path-cam construction, are not needed in my present construction, so that the space thus saved may lie-utilized by thevpresenee of additional heddle-levers.

I claim, in combination with the heddle-lcvers of a loom,the arrangement of disk or plate-cams in pairs, with respect toeach heddle-lever and the pins thereof', so that both disks may act continuously upon the pins,

substantially' as described.

L. J. KNOWLES.

Witnesses Jos. F. HITCHCOCK, W. L. Pownns. 

